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Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued compensation $ 1,242,723 $ 1,512,885
Accrued research and development 8,695,554 8,415,560
Accrued other expenses 871,878 594,908
Accrued expenses $ 10,810,155 $ 10,523,353